function getParam(name){
    var search = document.location.search;
    var pattern = new RegExp("[?&]"+name+"\=([^&]+)", "g");
    var matcher = pattern.exec(search);
    var items = null;
    if(null != matcher){
        try{
        	items = decodeURIComponent(decodeURIComponent(matcher[1]));
        }catch(e){
            try{
            	items = decodeURIComponent(matcher[1]);
            }catch(e){
            	items = matcher[1];
            }
        }
    }
    return items;
};